Telephone



'0. O. HAGE I June 17, 1924.

TELEPHONE Filed Dec. 4. 1919 2 Sheets-Sheet l 61H ozu m June 17 X924. 1,497,848

O. O. HAGE TELEPHONE Filed Dec. 4, 1919 2 SheeLs-Sheet 2 Patented June 17, 1924.

UNITED ,STATES N 1,497,848 PATENT Ormes.

OLAF O. HAGE, OF CR'KSTON, MINNESOTA.

TELEPHONE.

Application filed December ters and co-operative receivers, and has for its object to overcome the sluggishness of the transmitter diaphragm and effect a quick make and breaklwith the result that strong current is produced in the secondary of the induction coil; also to increase the responsive action of the receiver diaphragm and cause the latter to vibrate more sharply and thereby enhance the phonograpliic effect.

The invention depends upon the expanding eect produced in a metal rod by molecular disturbances resulting when a diaphragm is caused to vibrate under the influence of sound Waves. transmitter and receiver, since each employs a diaphragm.

The drawings herein illustrate a preferred embodiment of the invention. However, it is to be understood 'that in adapting the same to meet different conditions, various changes in the form, proportion and minor details of construction may be resorted to without departing-from the spirit of the invention as claimed hereinafter.

Referring to the accompanying drawings,

Figure l is a sectional detail of a microphone transmitter embodying theinventioii, the same being shown vattached to a stem, the lower portion of which is broken away.

Figure 2 is a rear view of the yfrcntplate `of the shell or casing, and the carbon cups or resistance buttons attached thereto and showing the same connected in accordance with the principles of the invention, Y

Figure 3 is a sectional detail of the supporting means and one of the carbon cups or resistance buttons, showing` the parts on a larger scale,

Figure 4 is a sectional detail of one of the carbon cups or resistance buttons,

Figure 5 is a sectional detail ofk a telephone receiver embodying the invention,

Figure 6 is a rear view of theshell or;

casing of the` receiver, the back plate being removed and parts broken away,

Figure 7 is a detail perspective view 'of This appliesto the 4, 191.9. Serial No. 342,340.

the metal rod connecting the diaphragme cf opposite'reproducers and the adjustable` stud co-acting therewith.

Corresponding and like parts are referred to in theaccompanying drawings-and indicated in the following specifica-tion by like reference characters.

yThe numeral 1 designates a stem or support for the transmitter and the same may be of anyapproved form. The transmittery embodies a shell or casing 2 and a frontr plate 8, the latter being centrally apertured to receive the usual mouth piece 4.' In accordance with the present invention carbon cups or resistance buttons 5 are provided in pairs and the buttons of each pair are diametrically opposed. This is indicated most clearly in Figs. l and 2. The carbon cups or resistance buttons 5 may be of any approved construction and consist of shell or casings inwhich are disposed the electrodes and interposed carbon granules. Each carbon cupor resistance button 5 is attached to a suitable support as 6, the same being in i the natureof a bracket, as illustrated most clearly in Fig. 3, the bracket being ofU- shape' and having its closed end attached to the front plate 3, and electrically insulated therefrom.' A stem 7 adjustably connects the carbon cup or resistance button to the elements comprising the brackets 6, said stem being threaded to receive pairs of binding nuts 8 between which'the respective elements of the support are clamped. The stem 7 may be connected to the shell or casing of the part 5 in any manner. A rod.9 connects one carbon cup or resistance button with the diametrically disposed carbon cupy or button'. When the resistance buttons are set quartering, as indicated in FigfQ., the connecting rods 9 cross at a central point. l A stud 10 is disposed at the point ofcrossing of the rods 9 and the latter passes loosely through openings formed therein. As Yindicated most clearly in Figi, the stud 10 comprises a head and a stem, thev latter being threaded? and extending 'centrally through the diaphragm l1 and made secure thereto by means of binding nuts l2 disposed upon opposite sides of the dia- 4.

'phragin The diaphragm l1 may be ofy any material commonly employed in the manufacture of telephonie instruments and may Ybe secured to the shell or casing in any preferred way. The carbon cups or resistancey buttons aire electrically connected bymeans stud 10 thereby completing thecircuitW through the carbon cups or resistance buttons 5 in a mannen Well understood.

' ln accordance With the present invention,

'Y sound Waves acting upon the ydiaiplragm 11 causes-the' same 'tovibrate in a manner Well understood and suchvibrations are trans- "rnitted through the stud to the metal' rods causingcorresponding variations in vthe primary Wire of the induction coil and Vproduc- "ary Wire "off the induction coil in a manner -Well understood, vinA "the operation oi" telephonic apparatus.

9 and-affect the same to cause a variation 'in their length whereby' the resistancein the carbon cups or buttons 5' varies thereby `ing variable induced current in the second-f' `he Variatioirinthe linear expansion of the metal'rods 9'1sffdue'chietly tothe'disturbances oiitheir molecular 'structure Winch is produced primarily bythe Vaction `of the "soundW-aves ontthe'diapl-iragm 11.

The f construction is lsuch'asto` enable a yplurality of"c`arbon"c`ups or 5 res'ista'nce buttons to? be 'used 'fin l series-.thereby `:amplifying 'they graphic action' Withthe result that the-sound f Waves :are: 'transmittedmore sharply' and- 1qiiicllyfsince*therefis a respectiveness of* current ofthe-primary of the induction Icoil. l

' The receiverof the-telephone set is il l'u'statedtmore*particularly in Fig.`-5 'and comprises afshell or casing 15 and a horn: 16: AAb'aclr plate' `lfcloses` the shell or casing. 115'= ThereceiverlS may be vo'li'any well known *construction andis shown attachefl to the` 'baclr plate 17.` uOpposed reproducers 19 areA f disposedffvvithin"theljshell or casing '15 at" l diametricallyY opposite points. The repro- Aftu'be 20 connects the' reproducers y19 and isdisposed Within the shell or'casing and connects thereproducers 19. VVtube- 22 conn'ect's Atherecenier 18witli thetube `21.

. duc'edv is sharp;I clear and distinct.

metal rod 23 connects the diaphragms of the reproducers"19A andisf' provided centrally with a `threaded opening toreceive a stud 24. Vrlhe rod 23 is adapted to be connected to the diaphragm of the reproducers in any preferred Way so that the parts may be under tension. The stud 2li is adjusted so that theA end adjacent the diaphragm oi the receiver 518 is-approximately in contact therewith so that any movement of the diaphragmfwill impart a 'corresponding movement tothe stud'and 'the latter being connect'ed to the rod 23 sets up an action therein Whichfcauses `the diaphragm of the repro- `ducers`19 tovibrate in unison With the'dia phragmof theJ receiver 18 but in a more pronounced manner so that the soundrepro- S05 as I have be'en'ableto ascertain7 'the action of the rod '23"is`similar 'to the' action' of the 'rods 9and is due to molecular disturbances brought aboutlby the vibrationfof the' diaphragm` of' thereceiver y18 resulting` from variationl `in thefinducied current produced jin` the secondary Wireof" the induction coil 'of' Ithe tra'nsin'itter'oi` thetel'ephone set.

f l-laviiigfthus fully t describedv my invention what Ylil'claimas newand desire tosecure by Letters Patent, is

`1. ln a telephone," a pair of oppositely `facing vibratory members adapted" to be 'affected byvv sound Wavesg aspacing rod"con- `-necting vand"extending"between said members tofcause "synchronous actuation thereof, adiaphragin disposed parallel to said rod and at right angles to the rvibratory 'members andf'means `connectingl "the longitudinal center of'y the spacing rod vviththe center oi the diaphragm.

2L InV a"`teleplione,"pairs of'o-ppositely disposed iesistance"buttons,' crossing rods coni'iectingopposed" resistance buttons, a stud eng'agingfthe' rodsl at the; point off vcrosssing, and a diaphragm"disposed'inparallel relation to the 'crossing rodszand at right angles to ythe resstancebuttons adapted to be ai!- 'ectedbysOund waves andhaving the said stud connected ""tlie'reto.

In testimony whereof I aliixmy 'signature in presence of two Witnesses.

` OLAF O. lli-XGP).

l -'Vixtnessesz f 'lV'."HAGE, l H. I. KRAMER. 

